Which of the following are usually made of galvanized steel not less than 0.0304" in thickness?
a. single wall chimneys
b. single wall vent connectors
c. Type B vents
d. draft hoods
ANSWER: b
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Back or backing and melt-thru welds are frequently used with groove welds to strengthen the weld on the opposite side of the joint.
Answer the following statement true (T) or false (F)
When leads for transistors are not aligned to the holes, how can they be formed so that there is no stress at the seal of the body of the transistor?
What will be an ideal response?
General discipline notes should be placed on the first or ____-series sheet of each subset.
A. Prime B. N C. A D. 0
Technician A says that both R-12 and R-134a refrigerants are lighter than air when in a gaseous state. Technician B says that using an electronic leak detector is not always the best way of sourcing a leak because its sensitivity can make identifying the location difficult. Who is correct?
a.Technician A only b.Technician B only c.Both A and B d.Neither A nor B